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Call of Duty Modern Warfare 3 (MW3)

How to Unlock 20 Round Mag Attachment

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The 20 Round Mag is a gun attachment found under the Magazines attachment category of Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the 20 Round Mag and find out all compatible guns for this attachment!

List of Contents

How to Unlock 20 Round Mag

Level Up Guns in MW3 Multiplayer Modes

The 20 Round Mag attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:

Weapon Required Level
Modern Warfare 3 -ISO 9mmISO 9mm Raise the ISO 9mm to Level 7
Modern Warfare 3 -Kastov-74uKastov-74u Raise the Kastov-74u to Level 7
Modern Warfare 3 -Kastov 762Kastov 762 Raise the Kastov 762 to Level 20
Modern Warfare 3 -ISO HemlockISO Hemlock Raise the ISO Hemlock to Level 4
Modern Warfare 3 -ChimeraChimera Raise the Chimera to Level 9
Modern Warfare 3 -EBR-14EBR-14 Raise the EBR-14 to Level 11
Modern Warfare 3 -TAQ-MTAQ-M Raise the TAQ-M to Level 23
Modern Warfare 3 -MCWMCW Raise the MCW to Level 23
Modern Warfare 3 -MTZ-556MTZ-556 Raise the MTZ-556 to Level 11
Modern Warfare 3 -SVA 545SVA 545 Raise the SVA 545 to Level 9
Modern Warfare 3 -StrikerStriker Raise the Striker to Level 5
Modern Warfare 3 -AMR9AMR9 Raise the AMR9 to Level 9
Modern Warfare 3 -MTZ InterceptorMTZ Interceptor Raise the MTZ Interceptor to Level 5
Modern Warfare 3 -Bas-PBas-P Raise the Bas-P to Level 11
Modern Warfare 3 -9mm Daemon9mm Daemon Raise the 9mm Daemon to Level 6
Modern Warfare 3 -FTAC SiegeFTAC Siege Raise the FTAC Siege to Level 13
Modern Warfare 3 -Holger 556Holger 556 Raise the Holger 556 to Level 7
Modern Warfare 3 -KVD EnforcerKVD Enforcer Raise the KVD Enforcer to Level 18
Modern Warfare 3 -WSP SwarmWSP Swarm Raise the WSP Swarm to Level 7
Modern Warfare 3 -DG-56DG-56 Raise the DG-56 to Level 5
Modern Warfare 3 -RAM-7RAM-7 Raise the RAM-7 to Level 7
Modern Warfare 3 -HRM-9HRM-9 Raise the HRM-9 to Level 4
Modern Warfare 3 -BP50BP50 Raise the BP50 to Level 7

Complete the Attachment's Armory Unlock Challenge

Modern Warfare 3 - Armory Unlock Challenge for Attachments

Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the 20 Round Mag attachment, early.

Once you unlock this feature, modify your chosen gun at the Gunsmith and select the 20 Round Mag from the Magazine attachment slot of your weapon. This should activate its Armory Unlock contract, allowing you to complete Daily and Bonus Challenges to get it earlier.

Armory Unlock Challenges

20 Round Mag Compatible Guns

Guns That Can Use the Attachment
Modern Warfare 3 -ISO 9mmISO 9mm Modern Warfare 3 -Kastov-74uKastov-74u Modern Warfare 3 -Kastov 545Kastov 545
Modern Warfare 3 -Kastov 762Kastov 762 Modern Warfare 3 -ISO HemlockISO Hemlock Modern Warfare 3 -EBR-14EBR-14
Modern Warfare 3 -LM-SLM-S Modern Warfare 3 -TAQ-MTAQ-M Modern Warfare 3 -MCWMCW
Modern Warfare 3 -MTZ-556MTZ-556 Modern Warfare 3 -SVA 545SVA 545 Modern Warfare 3 -StrikerStriker
Modern Warfare 3 -AMR9AMR9 Modern Warfare 3 -MTZ InterceptorMTZ Interceptor Modern Warfare 3 -Bas-PBas-P
Modern Warfare 3 -9mm Daemon9mm Daemon Modern Warfare 3 -FTAC SiegeFTAC Siege Modern Warfare 3 -Holger 556Holger 556
Modern Warfare 3 -KVD EnforcerKVD Enforcer Modern Warfare 3 -WSP SwarmWSP Swarm Modern Warfare 3 -DG-56DG-56
Modern Warfare 3 -RAM-7RAM-7 Modern Warfare 3 -HRM-9HRM-9 Modern Warfare 3 -BP50BP50

Modern Warfare 3 (MW3) Related Guides

Modern Warfare 3 - Attachments

List of All Attachments

Attachment Types in MW3

Attachments By Type
Barrel Stock Ammunition Muzzle
Rear Grip Optic Underbarrel Magazine
Receiver Laser Comb Trigger Action
Guard Bolt Arm Rail
Carry Handle Lever Loader Wire
Conversion Kit

All Magazine Attachments in MW3

All Related Attachments
10 Round Mag 100 Round 556 Belt 100 Round Belt Mag
100 Round Box Mag 100 Round Drum 100 Round Mag
12 Round Mag 12 Shell Mag 125 Round Belt Mag
13 Round Mag 15 Round Mag 15 Round Magazine
150 Round Belt 150 Round Drum 150 Round Mag
150-Round Box Magazine 18 Round Mag 20 Round Drum
20 Round Mag 20 Round Magazine 200 Round 556 Belt
200 Round Belt 200 Round Belt Mag 24 Round Mag
25 Round Mag 25 Shell Drum 26 Round Mag
30 Round Drum 30 Round Mag 32 Round Mag
33 Round Mag 40 Round Drum 40 Round Mag
42 Round Mag 45 Round Mag 48 Round Mag
5 Round Mag 5 Round Magazine 5 Shell Mag
50 Round 762 Belt 50 Round Belt Mag 50 Round Drum
50 Round Mag 60 Round Drum 60 Round Mag
7 Round Mag 7 Round Magazine 7.62x51 30 Round Mag
72 Round Drum 75 Round Belt 8-Round Magazine
9 Round Mag Fennec Double Tap Mod Fennec Mag 45
Geist Single-Tap Mod Minibak Grip Mag MX Pro Mag
Single Tap Mod Stinger 25 Round Magazine

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